Collaborating with Dropbox

Use this method to send a quick file/folder to a recipient or two.
Your files can be as big as your Dropbox limit (generally 2 GB for free
accounts). And you can skip emailing large attachments!

Open your Dropbox folder.

Place the files or folders you want to share into your Dropbox.

Right-click (or control-click) the file/folder and choose Dropbox-Copy Public Link.

Address an email to the recipient and paste the link.

Send the email. The recipient clicks the link and the file downloads to their downloads folder or desktop.

Sharing a folder with another Dropbox user

Here’s another option: Instead of sharing a link, you can you share a folder inside your Dropbox. Shared folders appear in their Dropbox folders as well. When any of you make changes to the
contents of the folder, those changes are reflected on all the other
computers and devices. It's a great way to collaborate on a project
without the complexity of emails, FTP or server access.

Open your Dropbox folder in the menu bar, dock or sidebar.

Create a folder or drag one you want to share into the Dropbox folder.

Right-click (or control-click) the folder and choose Dropbox-Share This Folder.

Type an email address and message, then click Share Folder.

The recipient will receive instructions for joining Dropbox (if they
haven’t used it before), then they can access your files on the web,
desktop or device such as iPhone or iPad.